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Patent (99780) 99780
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lighting (99782) 99782
blasting (99780) 99780
heating (99780) 99780
light sources not otherwise provided for (99780) 99780
light sources using charges of combustible material (99780) 99780
light sources using electrochemiluminescence (99780) 99780
light sources using semiconductor devices as light-generatingelements (99780) 99780
mechanical engineering (99780) 99780
non-electric light sources using luminescence (99780) 99780
weapons (99780) 99780
functional features or details of lighting devices or systemsthereof (75906) 75906
structural combinations of lighting devices with otherarticles, not otherwise provided for (75906) 75906
indexing scheme associated with subclasses f21k, f21l, f21sand f21v, relating to theform or the kind of the light sources or of the colour of thelight emitted (69380) 69380
electricity (34331) 34331
basic electric elements (24606) 24606
non-portable lighting devices (24453) 24453
systems thereof (24453) 24453
vehicle lighting devices specially adapted for vehicleexteriors (24453) 24453
electric solid state devices not otherwise provided for (19609) 19609
semiconductor devices (19609) 19609
physics (15962) 15962
electric techniques not otherwise provided for (14321) 14321
optics (9576) 9576
electric heating (9561) 9561
electric lighting not otherwise provided for (9561) 9561
general tagging of cross-sectional technologies spanning over several sections of the ipc (8321) 8321
general tagging of new technological developments (8321) 8321
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (8321) 8321
optical elements, systems, or apparatus (7678) 7678
indexing scheme associated with subclasses f21k, f21l, f21sand f21v, relating to usesor applications of lighting devices or systems (7366) 7366
performing operations (5568) 5568
transporting (5568) 5568
casings or constructional details of electric apparatus (5087) 5087
manufacture of assemblages of electrical components (5087) 5087
printed circuits (5087) 5087
technical subjects covered by former uspc (5039) 5039
chemistry (4654) 4654
metallurgy (4644) 4644
human necessities (3959) 3959
dyes (3638) 3638
adhesives (3636) 3636
miscellaneous applications of materials (3636) 3636
miscellaneous compositions (3636) 3636
natural resins (3636) 3636
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technologies or applications for mitigation or adaptation againstclimate change (3583) 3583
materials for miscellaneous applications, not provided forelsewhere (3321) 3321
devices or arrangements, the optical operation of which ismodified by changing the optical properties of the medium of thedevices or arrangements for the control of the intensity,colour, phase, polarisation or direction of light, e.g.switching, gating, modulating or demodulating (2954) 2954
frequency-changing (2954) 2954
non-linear optics (2954) 2954
optical analogue/digital converters (2954) 2954
optical logic elements (2954) 2954
techniques or procedures for the operation thereof (2954) 2954
advertising (2875) 2875
cryptography (2875) 2875
display (2875) 2875
education (2875) 2875
seals (2875) 2875
cinematography (2849) 2849
electrography (2849) 2849
holography (2849) 2849
photography (2849) 2849
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (2817) 2817
accessories therefor (2707) 2707
apparatus or arrangements employing analogous techniques usingwaves other than optical waves (2683) 2683
apparatus or arrangements for taking photographs or forprojecting or viewing them (2683) 2683
climate change mitigation technologies related to buildings,e.g. housing, house appliances or related end-userapplications (2601) 2601
displaying (2558) 2558
labels or name-plates (2558) 2558
signs (2558) 2558
technical subjects covered by former us classification (2386) 2386
electric discharge tubes or discharge lamps (2307) 2307
current collectors (2255) 2255
line connectors (2255) 2255
vehicles in general (1918) 1918
arrangement of signalling or lighting devices, the mounting orsupporting thereof or circuits therefor, for vehicles ingeneral (1840) 1840
hygiene (1660) 1660
medical or veterinary science (1660) 1660
electric communication technique (1512) 1512
measuring (1479) 1479
testing (1479) 1479
lighting devices or systems thereof, being portable orspecially adapted for transportation (1309) 1309
agriculture (1260) 1260
animal husbandry (1259) 1259
fishing (1259) 1259
forestry (1259) 1259
hunting (1259) 1259
trapping (1259) 1259
devices using stimulated emission (1107) 1107
pictorial communication, e.g. television (988) 988
signalling (965) 965
fixed constructions (754) 754
working of plastics (681) 681
working of substances in a plastic state, in general (681) 681
layered products (652) 652
layered products, i.e. products built-up of strata of flat ornon-flat, e.g. cellular or honeycomb, form (652) 652
cultivation of vegetables, flowers, rice, fruit, vines, hopsor seaweed (636) 636
horticulture (636) 636
watering (636) 636
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English (86513) 86513
Chinese (36922) 36922
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